package STUDENT.LEKHUONGDUY.OOPs.Calculator;
public class Models {
	Object obj = new Object();
	public double cong(Object obj){
		return obj.getA() + obj.getB();
	}
	
	public double tru(Object obj){
		return obj.getA() - obj.getB() ;
	}
	
	public double nhan(Object obj){
		return obj.getA() * obj.getB() ;
	}
	
	public double chia(Object obj){
		return obj.getA() / obj.getB() ;
	}
}
